From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02B0AC43381 for ; Sat, 23 Mar 2019 07:32:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BACEC218E2 for ; Sat, 23 Mar 2019 07:32:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727008AbfCWHcI (ORCPT ); Sat, 23 Mar 2019 03:32:08 -0400 Received: from mail-it1-f198.google.com ([209.85.166.198]:58983 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726211AbfCWHcH (ORCPT ); Sat, 23 Mar 2019 03:32:07 -0400 Received: by mail-it1-f198.google.com with SMTP id 9so4282054ita.8 for ; Sat, 23 Mar 2019 00:32:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=gaHUZVNfxwquwPThy4RdkRcDrRHROah3vnldFaiUvTk=; b=cZsm3+oRuY5LUD2qjgjz3XmGsj2KVLa+zhyF34VQFzeOjyXm6cilSKlhYv9MmmGDsj jPUI75boNDj/B9ab9TBRI25VQFG0KaBe3vqJ+ZgDDLFVrPy68xBCGwmeuBynemmhvKK3 v7rqeecprzWuKf8xMi8mxCnn2WrY0s/nY9fUnKXECgfJyDlCqYhloOguy+VkIChdSJLm GubteTS6e7Fq6vpi6M9GaZCFYpUeXM8NOjUbHFxylV62iRNp69VoRRAonQYScpcrhyEg KKT85uGBRSdimuk2CudUw4/CyV7Oulk3YQ5TJw6fSGm0HV/48SRhNfJSrnpacDGQvkU8 oTvA== X-Gm-Message-State: APjAAAUTAei4kdUKewK9y0tezV/GBRzaa7VnBE47MRgWnjCl1qnoKifL MhS36T3x6P848xQ33LRaLyLSGPYqZgSlTMLffEh+d6UL/Na8 X-Google-Smtp-Source: APXvYqyb5H99qqf1BnHNLOr1UShzMPRQJOFfzwNYCljL58KFvw9NG2wWY2kKz+ULnsDoytlbdbDLBMqs4QLzPMUufGGrHQwzWJRR MIME-Version: 1.0 X-Received: by 2002:a6b:d304:: with SMTP id s4mr8933823iob.228.1553326326299; Sat, 23 Mar 2019 00:32:06 -0700 (PDT) Date: Sat, 23 Mar 2019 00:32:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e644ba0584bdf7e8@google.com> Subject: kernel BUG at net/core/net-sysfs.c:LINE! From: syzbot To: alexander.h.duyck@intel.com, amritha.nambiar@intel.com, andriy.shevchenko@linux.intel.com, davem@davemloft.net, dmitry.torokhov@gmail.com, f.fainelli@gmail.com, idosch@mellanox.com, joe@perches.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, stephen@networkplumber.org, syzkaller-bugs@googlegroups.com, tyhicks@canonical.com, wanghai26@huawei.com, yuehaibing@huawei.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: e382d91f Add linux-next specific files for 20190322 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1737671b200000 kernel config: https://syzkaller.appspot.com/x/.config?x=3d850e8b394c7a19 dashboard link: https://syzkaller.appspot.com/bug?extid=6024817a931b2830bc93 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1795613b200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10f5a437200000 The bug was bisected to: commit 6b70fc94afd165342876e53fc4b2f7d085009945 Author: Wang Hai Date: Wed Mar 20 18:25:05 2019 +0000 net-sysfs: Fix memory leak in netdev_register_kobject bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1522556d200000 final crash: https://syzkaller.appspot.com/x/report.txt?x=1722556d200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1322556d200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+6024817a931b2830bc93@syzkaller.appspotmail.com Fixes: 6b70fc94afd1 ("net-sysfs: Fix memory leak in netdev_register_kobject") RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441399 RDX: 0000000020000080 RSI: 00000000000089f1 RDI: 0000000000000006 RBP: 00007ffcd20666d0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000007 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ kernel BUG at net/core/net-sysfs.c:1631! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8035 Comm: syz-executor344 Not tainted 5.1.0-rc1-next-20190322 #9 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:netdev_release net/core/net-sysfs.c:1631 [inline] RIP: 0010:netdev_release+0x92/0xb0 net/core/net-sysfs.c:1627 Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 12 77 20 fc 4c 89 ef e8 7a cc f5 ff 5b 41 5c 41 5d 5d c3 e8 9e 9b e8 fb <0f> 0b e8 27 b1 20 fc eb 9c e8 80 b1 20 fc eb d0 0f 1f 40 00 66 2e RSP: 0018:ffff88808d6af718 EFLAGS: 00010293 RAX: ffff8880a87902c0 RBX: ffff88808e3612a0 RCX: ffffffff8587fc89 RDX: 0000000000000000 RSI: ffffffff8587fcd2 RDI: 0000000000000001 RBP: ffff88808d6af730 R08: ffff8880a87902c0 R09: ffff8880a8790b60 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88808e360d00 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000001752880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000098da2000 CR4: 00000000001406e0 Call Trace: device_release+0x7d/0x210 drivers/base/core.c:1064 kobject_cleanup lib/kobject.c:662 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:67 [inline] kobject_put.cold+0x28f/0x2ec lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2205 netdev_register_kobject+0x1a1/0x3c0 net/core/net-sysfs.c:1763 register_netdevice+0x878/0xff0 net/core/dev.c:8709 ip6_tnl_create2+0x1c2/0x350 net/ipv6/ip6_tunnel.c:269 ip6_tnl_create net/ipv6/ip6_tunnel.c:320 [inline] ip6_tnl_locate+0x63f/0x8d0 net/ipv6/ip6_tunnel.c:368 ip6_tnl_ioctl+0x490/0xab0 net/ipv6/ip6_tunnel.c:1634 dev_ifsioc+0x257/0x990 net/core/dev_ioctl.c:322 dev_ioctl+0x286/0xc90 net/core/dev_ioctl.c:513 sock_ioctl+0x48b/0x610 net/socket.c:1102 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441399 Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffcd20666b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441399 RDX: 0000000020000080 RSI: 00000000000089f1 RDI: 0000000000000006 RBP: 00007ffcd20666d0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000007 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0dbf190846958075 ]--- RIP: 0010:netdev_release net/core/net-sysfs.c:1631 [inline] RIP: 0010:netdev_release+0x92/0xb0 net/core/net-sysfs.c:1627 Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 12 77 20 fc 4c 89 ef e8 7a cc f5 ff 5b 41 5c 41 5d 5d c3 e8 9e 9b e8 fb <0f> 0b e8 27 b1 20 fc eb 9c e8 80 b1 20 fc eb d0 0f 1f 40 00 66 2e RSP: 0018:ffff88808d6af718 EFLAGS: 00010293 RAX: ffff8880a87902c0 RBX: ffff88808e3612a0 RCX: ffffffff8587fc89 RDX: 0000000000000000 RSI: ffffffff8587fcd2 RDI: 0000000000000001 RBP: ffff88808d6af730 R08: ffff8880a87902c0 R09: ffff8880a8790b60 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88808e360d00 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000001752880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000098da2000 CR4: 00000000001406e0 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches